My knowledge on power really is pretty poor really, I know the basics and thats it ;) So excuse my layman :D

My daughter has asked about getting a portable powerstation (like the Ecoflow River) to power some gear while busking.

She'd normally have a small amp/speaker, guitar pedal and Macbook (obviously this has decent battery anyway so might not even need to be plugged in)

Pedal would be minimal power (think its like a 5v 1a adaptor), amp is more of a concern for her. Power reqs for that are :

I asked CoPilot and its said something like the EcoFlow River 3+ would run for approx 10hrs if the laptops not connected, or 5 if the laptop is plugged in and using max power (brightness, CPU etc)

Does this sound right ? :)

TIA